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* gcov: docs: add a note on GCC vs Clang differencesTri Vo2019-05-141-4/+14
| | | | | | | | | | | | | | | | | | | | | | Document some things of note to gcov users: 1. GCC gcov and Clang llvm-cov tools are not compatible. 2. The use of GCC vs Clang is transparent at build-time. Also adjust the documentation to account for the removal of config symbol CONFIG_GCOV_FORMAT_AUTODETECT by commit 6a61b70b43c9 ("gcov: remove CONFIG_GCOV_FORMAT_AUTODETECT"). Link: http://lkml.kernel.org/r/20190318025411.98014-4-trong@android.com Signed-off-by: Tri Vo <trong@android.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com> Cc: Daniel Mentz <danielmentz@google.com> Cc: Greg Hackmann <ghackmann@android.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Petri Gynther <pgynther@google.com> Cc: Prasad Sodagudi <psodagud@quicinc.com> Cc: Trilok Soni <tsoni@quicinc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'docs-5.2' of git://git.lwn.net/linuxLinus Torvalds2019-05-081-13/+29
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull documentation updates from Jonathan Corbet: "A reasonably busy cycle for docs, including: - Lots of work on the Chinese and Italian translations - Some license-rules clarifications from Christoph - Various build-script fixes - A new document on memory models - RST conversion of the live-patching docs - The usual collection of typo fixes and corrections" * tag 'docs-5.2' of git://git.lwn.net/linux: (140 commits) docs/livepatch: Unify style of livepatch documentation in the ReST format docs: livepatch: convert docs to ReST and rename to *.rst scripts/documentation-file-ref-check: detect broken :doc:`foo` scripts/documentation-file-ref-check: don't parse Next/ dir LICENSES: Rename other to deprecated LICENSES: Clearly mark dual license only licenses docs: Don't reference the ZLib license in license-rules.rst docs/vm: Minor editorial changes in the THP and hugetlbfs docs/vm: add documentation of memory models doc:it_IT: translation alignment doc: fix typo in PGP guide dontdiff: update with Kconfig build artifacts docs/zh_CN: fix typos in 1.Intro.rst file docs/zh_CN: redirect CoC docs to Chinese version doc: mm: migration doesn't use FOLL_SPLIT anymore docs: doc-guide: remove the extension from .rst files doc: kselftest: Fix KBUILD_OUTPUT usage instructions docs: trace: fix some Sphinx warnings docs: speculation.txt: mark example blocks as such docs: ntb.txt: add blank lines to clean up some Sphinx warnings ...
| * doc: kselftest: Fix KBUILD_OUTPUT usage instructionsShuah Khan2019-04-191-13/+29
| | | | | | | | | | | | | | | | | | | | Fix KBUILD_OUTPUT usage instructions. The current documentation is incorrect. Update and fix outdated information about summary option. Add a reference to kselftest wiki for additional information on the framework and tips on writing new tests. Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* | kselftest: Add test module framework headerTobin C. Harding2019-04-081-2/+92
|/ | | | | | | | | | | | | | | | | | | | | | kselftest runs as a userspace process. Sometimes we need to test things from kernel space. One way of doing this is by creating a test module. Currently doing so requires developers to write a bunch of boiler plate in the module if kselftest is to be used to run the tests. This means we currently have a load of duplicate code to achieve these ends. If we have a uniform method for implementing test modules then we can reduce code duplication, ensure uniformity in the test framework, ease code maintenance, and reduce the work required to create tests. This all helps to encourage developers to write and run tests. Add a C header file that can be included in test modules. This provides a single point for common test functions/macros. Implement a few macros that make up the start of the test framework. Add documentation for new kselftest header to kselftest documentation. Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tobin C. Harding <tobin@kernel.org> Signed-off-by: Shuah Khan <shuah@kernel.org>
* Documentation/dev-tools: Use gcc version number instead svn revision numberSebastian Andrzej Siewior2019-01-141-1/+1
| | | | | | | | | | | svn commit 231296 matches commit d29e939c63b71 ("Add fuzzing coverage support") in the gcc git. The change is part of gcc 6.1.0. Replace the svn commit number with a gcc version which everyone can easily compare. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* Merge tag 'docs-5.0' of git://git.lwn.net/linuxLinus Torvalds2018-12-293-8/+10
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull documentation update from Jonathan Corbet: "A fairly normal cycle for documentation stuff. We have a new document on perf security, more Italian translations, more improvements to the memory-management docs, improvements to the pathname lookup documentation, and the usual array of smaller fixes. As is often the case, there are a few reaches outside of Documentation/ to adjust kerneldoc comments" * tag 'docs-5.0' of git://git.lwn.net/linux: (38 commits) docs: improve pathname-lookup document structure configfs: fix wrong name of struct in documentation docs/mm-api: link slab_common.c to "The Slab Cache" section slab: make kmem_cache_create{_usercopy} description proper kernel-doc doc:process: add links where missing docs/core-api: make mm-api.rst more structured x86, boot: documentation whitespace fixup Documentation: devres: note checking needs when converting doc:it: add some process/* translations doc:it: fixes in process/1.Intro Documentation: convert path-lookup from markdown to resturctured text Documentation/admin-guide: update admin-guide index.rst Documentation/admin-guide: introduce perf-security.rst file scripts/kernel-doc: Fix struct and struct field attribute processing Documentation: dev-tools: Fix typos in index.rst Correct gen_init_cpio tool's documentation Document /proc/pid PID reuse behavior Documentation: update path-lookup.md for parallel lookups Documentation: Use "while" instead of "whilst" dmaengine: Add mailing list address to the documentation ...
| * doc:process: add links where missingFederico Vaga2018-12-061-0/+2
| | | | | | | | | | | | | | | | | | | | | | Some documents are refering to others without links. With this patch I add those missing links. This patch affects only documents under process/ and labels where necessary. Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation: dev-tools: Fix typos in index.rstShreyans Devendra Doshi2018-11-251-2/+2
| | | | | | | | | | | | | | Fixes a spelling error and removes an extra whitespace character. Signed-off-by: Shreyans Devendra Doshi <0xinfosect0r@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation/dev-tools: clean up kselftest.rstRandy Dunlap2018-11-071-6/+6
| | | | | | | | | | | | | | | | | | | | | | This is a small cleanup to kselftest.rst: - Fix some language typos in the usage instructions. - Change one non-ASCII space to an ASCII space. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Shuah Khan <shuah@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* | kasan: update documentationAndrey Konovalov2018-12-281-94/+138
|/ | | | | | | | | | | | | | | This patch updates KASAN documentation to reflect the addition of the new tag-based mode. Link: http://lkml.kernel.org/r/aabef9de317c54b8a3919a4946ce534c6576726a.1544099024.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Reviewed-by: Dmitry Vyukov <dvyukov@google.com> Cc: Christoph Lameter <cl@linux.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* docs: dev-tools: coccinelle: Update documentationHimanshu Jha2018-08-311-4/+19
| | | | | | | | | | | | * Fix install instruction by adding `./autogen` command before `./configure`. * Add link to a more detailed installation instruction. * Add link to SmPL grammar documentation. * Add single space after ',' to slightly improve readability. Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* doc: dev-tools: kselftest.rst: update config file locationAnders Roxell2018-08-311-1/+1
| | | | | | | | | Config fragment files should be placed in tools/testing/selftests/<testdir>/config Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Acked-by: Shuah Khan (Samsung OSG) <shuah@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* doc: dev-tools: kselftest.rst: update contributing new testsAnders Roxell2018-06-291-0/+5
| | | | | | | | | Add a description that kernel config options should be added into a config file that is placed next to the newly added test. Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Reviewed-by: Shuah Khan (Samsung OSG) <shuah@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* doc: dev-tools: kselftest.rst: update contributing new testsAnders Roxell2018-04-271-0/+5
| | | | | | | | | Add a description that the kernel headers should be used as far as it is possible and then the system headers. Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Reviewed-by: Shuah Khan (Samsung OSG) <shuah@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* Merge branch 'mm-rst' into docs-nextJonathan Corbet2018-04-161-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mike Rapoport says: These patches convert files in Documentation/vm to ReST format, add an initial index and link it to the top level documentation. There are no contents changes in the documentation, except few spelling fixes. The relatively large diffstat stems from the indentation and paragraph wrapping changes. I've tried to keep the formatting as consistent as possible, but I could miss some places that needed markup and add some markup where it was not necessary. [jc: significant conflicts in vm/hmm.rst]
| * docs/vm: rename documentation files to .rstMike Rapoport2018-04-161-1/+1
| | | | | | | | | | Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* | Merge tag 'docs-4.17' of git://git.lwn.net/linuxLinus Torvalds2018-04-031-1/+1
|\ \ | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull documentation updates from Jonathan Corbet: "There's been a fair amount of activity in Documentation/ this time around: - Lots of work aligning Documentation/ABI with reality, done by Aishwarya Pant. - The trace documentation has been converted to RST by Changbin Du - I thrashed up kernel-doc to deal with a parsing issue and to try to make the code more readable. It's still a 20+-year-old Perl hack, though. - Lots of other updates, typo fixes, and more" * tag 'docs-4.17' of git://git.lwn.net/linux: (82 commits) Documentation/process: update FUSE project website docs: kernel-doc: fix parsing of arrays dmaengine: Fix spelling for parenthesis in dmatest documentation dmaengine: Make dmatest.rst indeed reST compatible dmaengine: Add note to dmatest documentation about supported channels Documentation: magic-numbers: Fix typo Documentation: admin-guide: add kvmconfig, xenconfig and tinyconfig commands Input: alps - Update documentation for trackstick v3 format Documentation: Mention why %p prints ptrval COPYING: use the new text with points to the license files COPYING: create a new file with points to the Kernel license files Input: trackpoint: document sysfs interface xfs: Change URL for the project in xfs.txt char/bsr: add sysfs interface documentation acpi: nfit: document sysfs interface block: rbd: update sysfs interface Documentation/sparse: fix typo Documentation/CodingStyle: Add an example for braces docs/vm: update 00-INDEX kernel-doc: Remove __sched markings ...
| * Documentation/sparse: fix typoEric Engestrom2018-03-211-1/+1
| | | | | | | | | | Signed-off-by: Eric Engestrom <eric.engestrom@imgtec.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* | docs: Remove remaining references to metagJames Hogan2018-02-221-1/+1
|/ | | | | | | | | | Remove any remaining references to the Meta architecture in Documentation/, primarily from Documentation/features/. Signed-off-by: James Hogan <jhogan@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-metag@vger.kernel.org Cc: linux-doc@vger.kernel.org
* Merge tag 'kbuild-misc-v4.15' of ↵Linus Torvalds2017-11-171-3/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild misc updates from Masahiro Yamada: - Clean up and fix RPM package build - Fix a warning in DEB package build - Improve coccicheck script - Improve some semantic patches * tag 'kbuild-misc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: docs: dev-tools: coccinelle: delete out of date wiki reference coccinelle: orplus: reorganize to improve performance coccinelle: use exists to improve efficiency builddeb: Pass the kernel:debarch substvar to dpkg-genchanges Coccinelle: use false positive annotation coccinelle: fix verbose message about .cocci file being run coccinelle: grep Options and Requires fields more precisely Coccinelle: make DEBUG_FILE option more useful coccinelle: api: detect identical chip data arrays coccinelle: Improve setup_timer.cocci matching Coccinelle: setup_timer: improve messages from setup_timer kbuild: rpm-pkg: do not force -jN in submake kbuild: rpm-pkg: keep spec file until make mrproper kbuild: rpm-pkg: fix jobserver unavailable warning kbuild: rpm-pkg: replace $RPM_BUILD_ROOT with %{buildroot} kbuild: rpm-pkg: fix build error when CONFIG_MODULES is disabled kbuild: rpm-pkg: refactor mkspec with here doc kbuild: rpm-pkg: clean up mkspec kbuild: rpm-pkg: install vmlinux.bz2 unconditionally kbuild: rpm-pkg: remove ppc64 specific image handling
| * docs: dev-tools: coccinelle: delete out of date wiki referenceJulia Lawall2017-11-161-3/+0
| | | | | | | | | | | | | | The wiki is no longer available. Signed-off-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
* | kcov: update documentationVictor Chibotaru2017-11-171-4/+95
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The updated documentation describes new KCOV mode for collecting comparison operands. Link: http://lkml.kernel.org/r/20171011095459.70721-3-glider@google.com Signed-off-by: Victor Chibotaru <tchibo@google.com> Signed-off-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Popov <alex.popov@linux.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Kees Cook <keescook@chromium.org> Cc: Vegard Nossum <vegard.nossum@oracle.com> Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com> Cc: <syzkaller@googlegroups.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | kmemcheck: rip it outLevin, Alexander (Sasha Levin)2017-11-152-734/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix up makefiles, remove references, and git rm kmemcheck. Link: http://lkml.kernel.org/r/20171007030159.22241-4-alexander.levin@verizon.com Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Vegard Nossum <vegardno@ifi.uio.no> Cc: Pekka Enberg <penberg@kernel.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Alexander Potapenko <glider@google.com> Cc: Tim Hansen <devtimhansen@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | docs: dev-tools: correct Coccinelle version numberJulia Lawall2017-10-191-1/+1
| | | | | | | | | | | | | | There is no Coccinelle version 1.2. 1.0.2 must be what was intended. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* | doc: dev-tools: kselftest.rst: update to include make O=dir supportShuah Khan2017-10-121-2/+32
|/ | | | | | | | | Update to include details on make O=dir support and other changes improve test results output. Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> [jc: Tweaked RST formatting slightly ] Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* docs: disable KASLR when debugging kernelZhouyi Zhou2017-07-171-2/+4
| | | | | | | | | | | | commit 6807c84652b0 ("x86: Enable KASLR by default") enables KASLR by default on x86. While KASLR will confuse gdb which resolve kernel symbol address from symbol table of vmlinux. We should turn off KASLR for kernel debugging. Signed-off-by: Zhouyi Zhou <zhouzhouyi@gmail.com> Reviewed-by: Kieran Bingham <kbingham@kernel.org> Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* docs: disable KASLR when debugging kernelZhouyi Zhou2017-07-171-1/+10
| | | | | | | | | | commit 6807c84652b0 ("x86: Enable KASLR by default") enables KASLR by default on x86. While KASLR will confuse gdb which resolve kernel symbol address from symbol table of vmlinux. We should turn off KASLR for kernel debugging. Signed-off-by: Zhouyi Zhou <zhouzhouyi@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* Merge tag 'linux-kselftest-4.13-rc1-update' of ↵Linus Torvalds2017-07-072-0/+156
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest updates from Shuah Khan: "This update consists of: - TAP13 framework and changes to some tests to convert to TAP13. Converting kselftest output to standard format will help identify run to run differences and pin point failures easily. TAP13 format has been in use for several years and the output is human friendly. Please find the specification: https://testanything.org/tap-version-13-specification.html Credit goes to Tim Bird for recommending TAP13 as a suitable format, and to Grag KH for kick starting the work with help from Paul Elder and Alice Ferrazzi The first phase of the TAp13 conversion is included in this update. Future updates will include updates to rest of the tests. - Masami Hiramatsu fixed ftrace to run on 4.9 stable kernels. - Kselftest documnetation has been converted to ReST format. Document now has a new home under Documentation/dev-tools. - kselftest_harness.h is now available for general use as a result of Mickaël Salaün's work. - Several fixes to skip and/or fail tests gracefully on older releases" * tag 'linux-kselftest-4.13-rc1-update' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (48 commits) selftests: membarrier: use ksft_* var arg msg api selftests: breakpoints: breakpoint_test_arm64: convert test to use TAP13 selftests: breakpoints: step_after_suspend_test use ksft_* var arg msg api selftests: breakpoint_test: use ksft_* var arg msg api kselftest: add ksft_print_msg() function to output general information kselftest: make ksft_* output functions variadic selftests/capabilities: Fix the test_execve test selftests: intel_pstate: add .gitignore selftests: fix memory-hotplug test selftests: add missing test name in memory-hotplug test selftests: check percentage range for memory-hotplug test selftests: check hot-pluggagble memory for memory-hotplug test selftests: typo correction for memory-hotplug test selftests: ftrace: Use md5sum to take less time of checking logs tools/testing/selftests/sysctl: Add pre-check to the value of writes_strict kselftest.rst: do some adjustments after ReST conversion selftest/net/Makefile: Specify output with $(OUTPUT) selftest/intel_pstate/aperf: Use LDLIBS instead of LDFLAGS selftest/memfd/Makefile: Fix build error selftests: lib: Skip tests on missing test modules ...
| * kselftest.rst: do some adjustments after ReST conversionMauro Carvalho Chehab2017-06-261-16/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do some minor adjustments after ReST conversion: - On most documents, we use prepend a "$ " before command line arguments; - Prefer to use :: on the preceding line; - Split a multi-paragraph description as such. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Acked-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
| * Documentation/dev-tools: Add kselftest_harness documentationMickaël Salaün2017-06-071-0/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | Add ReST metadata to kselftest_harness.h to be able to include the comments in the Sphinx documentation. Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kees Cook <keescook@chromium.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Will Drewry <wad@chromium.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
| * Documentation/dev-tools: Use reStructuredText markups for kselftestMickaël Salaün2017-06-072-27/+41
| | | | | | | | | | | | | | | | | | | | Include and convert kselftest to the Sphinx format. Signed-off-by: Mickaël Salaün <mic@digikod.net> Acked-by: Kees Cook <keescook@chromium.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
| * Documentation/dev-tools: Add kselftestMickaël Salaün2017-06-071-0/+109
| | | | | | | | | | | | | | | | | | | | Move kselftest.txt to dev-tools/kselftest.rst . Signed-off-by: Mickaël Salaün <mic@digikod.net> Acked-by: Kees Cook <keescook@chromium.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
* | mm: kmemleak: treat vm_struct as alternative reference to vmalloc'ed objectsCatalin Marinas2017-07-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kmemleak requires that vmalloc'ed objects have a minimum reference count of 2: one in the corresponding vm_struct object and the other owned by the vmalloc() caller. There are cases, however, where the original vmalloc() returned pointer is lost and, instead, a pointer to vm_struct is stored (see free_thread_stack()). Kmemleak currently reports such objects as leaks. This patch adds support for treating any surplus references to an object as additional references to a specified object. It introduces the kmemleak_vmalloc() API function which takes a vm_struct pointer and sets its surplus reference passing to the actual vmalloc() returned pointer. The __vmalloc_node_range() calling site has been modified accordingly. Link: http://lkml.kernel.org/r/1495726937-23557-4-git-send-email-catalin.marinas@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reported-by: "Luis R. Rodriguez" <mcgrof@kernel.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: "Luis R. Rodriguez" <mcgrof@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge tag 'docs-4.13' of git://git.lwn.net/linuxLinus Torvalds2017-07-032-0/+908
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull documentation updates from Jonathan Corbet: "There has been a fair amount of activity in the docs tree this time around. Highlights include: - Conversion of a bunch of security documentation into RST - The conversion of the remaining DocBook templates by The Amazing Mauro Machine. We can now drop the entire DocBook build chain. - The usual collection of fixes and minor updates" * tag 'docs-4.13' of git://git.lwn.net/linux: (90 commits) scripts/kernel-doc: handle DECLARE_HASHTABLE Documentation: atomic_ops.txt is core-api/atomic_ops.rst Docs: clean up some DocBook loose ends Make the main documentation title less Geocities Docs: Use kernel-figure in vidioc-g-selection.rst Docs: fix table problems in ras.rst Docs: Fix breakage with Sphinx 1.5 and upper Docs: Include the Latex "ifthen" package doc/kokr/howto: Only send regression fixes after -rc1 docs-rst: fix broken links to dynamic-debug-howto in kernel-parameters doc: Document suitability of IBM Verse for kernel development Doc: fix a markup error in coding-style.rst docs: driver-api: i2c: remove some outdated information Documentation: DMA API: fix a typo in a function name Docs: Insert missing space to separate link from text doc/ko_KR/memory-barriers: Update control-dependencies example Documentation, kbuild: fix typo "minimun" -> "minimum" docs: Fix some formatting issues in request-key.rst doc: ReSTify keys-trusted-encrypted.txt doc: ReSTify keys-request-key.txt ...
| * | kgdb.rst: Adjust ReST markupsMauro Carvalho Chehab2017-05-161-255/+232
| | | | | | | | | | | | | | | | | | | | | | | | | | | The automatic conversion didn't work too well for this file. It added weird html blocks inside it, and did some weird things for literals. Manually fix it, in order to present a nice display at html/pdf outputs. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
| * | docs-rst: convert kgdb DocBook to ReSTMauro Carvalho Chehab2017-05-162-0/+931
| |/ | | | | | | | | | | | | Use pandoc to convert documentation to ReST by calling Documentation/sphinx/tmplcvt script. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* | rcu: Remove SPARSE_RCU_POINTER Kconfig optionPaul E. McKenney2017-06-081-6/+0
|/ | | | | | | | | | | The sparse-based checking for non-RCU accesses to RCU-protected pointers has been around for a very long time, and it is now the only type of sparse-based checking that is optional. This commit therefore makes it unconditional. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Fengguang Wu <fengguang.wu@intel.com>
* scripts/spelling.txt: add "disble(d)" pattern and fix typo instancesMasahiro Yamada2017-03-091-1/+1
| | | | | | | | | | | | | | | | Fix typos and add the following to the scripts/spelling.txt: disble||disable disbled||disabled I kept the TSL2563_INT_DISBLED in /drivers/iio/light/tsl2563.c untouched. The macro is not referenced at all, but this commit is touching only comment blocks just in case. Link: http://lkml.kernel.org/r/1481573103-11329-20-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Improve sparse documentationMatthew Wilcox2017-02-151-0/+6
| | | | | | | | | Add documentation of -DCONFIG_SPARSE_RCU_POINTER. I started to add documentation of -D__CHECK_ENDIAN__ as well, but discovered I'm too late; that's now enabled by default. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* Documentation/sparse: drop __CHECK_ENDIAN__Michael S. Tsirkin2016-12-161-6/+1
| | | | | | It's no longer used. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* Documentation/sparse: drop __bitwise__Michael S. Tsirkin2016-12-161-7/+0
| | | | | | | We dropped __CHECK_ENDIAN__ so __bitwise__ is now an implementation detail. People should use __bitwise everywhere. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* Documentation/dev-tools: use code-block with proper languageJani Nikula2016-11-032-3/+9
| | | | | | | Now that we don't have automatic syntax highlighting, use the code-block directive with the explicitly selected language, where appropriate. Signed-off-by: Jani Nikula <jani.nikula@intel.com>
* doc-rst: make dev-tools folder buildable stand-aloneMarkus Heiser2016-10-262-0/+18
| | | | | | | | | | | | Add minimal conf.py and moved dev-tools/tools.rst to dev-tools/index.rst makes the dev-tools folder buildable stand-alone. To build only this folder run:: make SPHINXDIRS=dev-tools htmldocs make SPHINXDIRS=dev-tools pdfdocs Signed-off-by: Markus Heiser <markus.heiser@darmarit.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mappingCatalin Marinas2016-10-111-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | Some of the kmemleak_*() callbacks in memblock, bootmem, CMA convert a physical address to a virtual one using __va(). However, such physical addresses may sometimes be located in highmem and using __va() is incorrect, leading to inconsistent object tracking in kmemleak. The following functions have been added to the kmemleak API and they take a physical address as the object pointer. They only perform the corresponding action if the address has a lowmem mapping: kmemleak_alloc_phys kmemleak_free_part_phys kmemleak_not_leak_phys kmemleak_ignore_phys The affected calling places have been updated to use the new kmemleak API. Link: http://lkml.kernel.org/r/1471531432-16503-1-git-send-email-catalin.marinas@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reported-by: Vignesh R <vigneshr@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'dev-tools' into doc/4.9Jonathan Corbet2016-08-191-1/+1
| | | | | Coalesce development-tool documents into a single directory and sphinxify them.
* docs: Sphinxify gdb-kernel-debugging.txt and move to dev-toolsJonathan Corbet2016-08-182-0/+174
| | | | | Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* docs: sphinxify kmemcheck.txt and move to dev-toolsJonathan Corbet2016-08-182-0/+734
| | | | | | Cc: Vegard Nossum <vegardno@ifi.uio.no> Cc: Pekka Enberg <penberg@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* docs: sphinxify kmemleak.txt and move it to dev-toolsJonathan Corbet2016-08-182-0/+211
| | | | | Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* docs: sphinxify ubsan.txt and move it to dev-toolsJonathan Corbet2016-08-182-0/+89
| | | | | Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* docs: sphinxify kasan.txt and move to dev-toolsJonathan Corbet2016-08-182-0/+174
| | | | | | | | | No textual changes beyond formatting. Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Acked-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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